HYDRAULIC VALVE REMOTE CONTROL SYSTEM · The system consists of the hydraulic actuator, a power...

Nordic Flow Control Valve Remote Control Systems 1

HYDRAULIC VALVE REMOTE CONTROL SYSTEM

OVERVIEW

Nordic Flow Control’s compact design for our Hydraulic Valve Remote Control Systems does not compromise on power. Our systems operate at a higher torque level even with our smaller actuators. Submerged applications are available, and maintenance is possible even during operation. By having a hand pump in a deck box with solenoid valves, manual operations are now possible.

Our Hydraulic Valve Remote Control Systems are tried and tested in the harshest conditions. The system consists of the hydraulic actuator, a power unit, solenoid valve cabinet, and the control station with operating system.

Our actuators and control systems are able to match and operate valves with no limitations.

BENEFITS

• Abletooperatebiggersizevalveswithsmalleractuators• Abletouseforsubmergedapplications• Costefficient• Reliable• Abletooperateathazardousareas• Simplicityofdesignandcontrol

Nordic Flow Control Valve Remote Control Systems2

COMPONENTS

ACTUATORSNordic Flow Control’s actuators are manufactured using sophisticated machinery in our own production plant. They convert hydraulic energy directly into a mechanical rotating movement by using the rack and pinion principle, elimi-nating cost from intensive servicing, maintenance and the sensitivity of transmission elements.

Ouractuatorsarecreatedfordurability,performanceandcosteffectiveness.OurnewNRAseriesactuatorsarenowmorecompactandprovidehighertorqueatevensmallersizes.Theyhavealongerlifespan,withhigherefficiency.Polymer bearings for smaller actuators and ball bearings for bigger actuators are used to reduce friction between the parts. Mounting is according to ISO5211 standards, but can be customised to meet other requirements.

With no need for valves to be dismounted, maintenance work during normal operations is possible, cutting down-timeneededforrepairs.Asetofrepairkitwillbeprovidedforeveryactuatorsupplied.

Features

• Compactandsimplerackandpiniondesign• Noexternaltubing• Replaceablebrassrings• Submerged/Non-submerged• Highreliability• Leftchamberisequivalenttorightchamber,andsparesareinterchangeableforthesamemodelofactuators• Canbeconvertedtospringreturnusingthesameactuatorbody• Bypassvalveincludedforeasypurgingofline• SuitableforallQuarter-turnValves• AdjustableOPEN/CLOSEpositions• MeetstherequirementsfrommajorclassificationauthoritieslikeAmericanBureauofShipping,DetNorskeVeri-

tas,Lloyd’sRegisterofShipping,GermanischerLloyd,BureauVeritas,ChinaClassificationSocietyandothers• SuitableforMarineandOffshoreapplications

Benefits

• Minimalparts/sparespurchaserequired• Maintenanceispossibleduring“live”operations,withnoneedtodismountvalveduringservicingandmainte-

nance• Easeofrepairandmaintenance

Optional Equipment

• Actuator-mountedLimitSwitch(ContinuousorON/OFF)• Epoxycoating(Thicknessandpaintcolour)• Submergedaccessories• EmergencyoperationHandPump


A Closer Look At Nordic’s Actuators

NRA SERIES DOUBLE ACTING ACTUATORS

TECHNICAL SPECIFICATIONS

DoubleActingHydraulicActuator SingleActingHydraulicActuator

Working Pressure 135 bar 135 bar

Rotation 90o+/-3o 90o+/-3o

Indication OPEN/CLOSEonshaft OPEN/CLOSEonshaft

Protection IP65/IP68 IP65/IP68

Colour Black(Mattefinish) Black(Mattefinish)

Hydraulic Media Recommended acid free hydraulic Recommended acid free hydraulic

viscosity range 15 to 200 cSt viscosity range 15 to 200 cSt

Working Temperature -15oCto80oC(Standard) -15oCto80oC(Standard)


TECHNICAL SPECIFICATIONS – ACTUATOR DRAWINGS


CABINETS AND DECK BOXES

Solenoid Valve Cabinet

NordicFlowControl’sSolenoidValveCabinet(SVC)centralisedcabinetdesignhousesallthenon-ISsolenoidvalvesthat are used to control the direction of oil flow to the actuators. The solenoid valve cabinet is installed in safe, non-hazardousareasandthePLCI/OmodulescanbeinstalledintheSVCperrequirements.

The SVC receives signals from the switches in the control consoles or from the computer system which activates the solenoid valves.

Our SVC units come in standard 60, 72, and 96 control valve designs. The cable entry can be customised to be from the top, bottom or side to suit requirements.

The Cabinet Consists of:

• SolenoidValves• ThrottleValves• PressureGauges• FeedbackIndicatorSwitches• Quickcoupling• CETOP3Manifolds• Flowswitchesand/orVolumetricPositionIndicators(VPI)forON/OFF

or modulating feedback• PLCremoteI/OModulesandnecessaryelectricalcomponentsoption

in the processing compartment• High-PressureFilter(Optional)

TECHNICAL SPECIFICATIONSWorking Pressure 135 bar

Max Test Pressure 200 bar

FittingConnection 1/4”BSPPor3/8”BSPP

Intrinsically Safe Deck Boxes

NordicFlowControl’swatertightDeckBoxeswithCentralisedIntrinsicallySafe(IS)solenoidvalvesareinstalledinhazardousareas.

The cabinet consists of:• ISSolenoidValves• ThrottleValves• PressureGauges• FeedbackIndicatorSwitches• Quickcoupling• CETOP3Manifolds• FlowSwitchesand/orVolumetricPositionIndicators(VPI)forOn/Off

or modulating feedback• AllbarriersarelocatedattheSafeArea• High-PressureFilter(Optional)

TECHNICAL SPECIFICATIONSWorking Pressure 135 bar

Max Test Pressure 200 bar

FittingConnection 1/4”BSPPor3/8”BSPP


NORDIC’S Model SVC 60 Solenoid Cabinet is able to hold 10 manifolds,Totaling 60 Solenoid Valves.

NORDIC’s Model SVC 72 Solenoid Cabinet is able to hold 12 Manifolds,Totaling 72 Solenoid Valves.


NORDIC’s Model SVC 96 Solenoid Cabinet is able to hold 16 Manifolds,Totaling 96 Solenoid Valves.

Solenoid Valve Cabinet with Processing Cabinet


HYDRAULIC POWER UNIT

NordicFlowControl’sHydraulicPowerUnit(HPU)isapprovedforuseonseveralvesselclassificationsandfacilities.Itsprovenreliableandcompactdesignallowsittobeplacedandusedinconfinedareas.

The HPU is designed for 100% standby. In the event of a power failure of the main input, the dual input feature enables the auxiliary input to cut-in automatically.

The control unit consists of a local starter cabinet or a remote operation panel in the control console with a manual switch for selecting the pump to be operated, giving the end user the flexibility to control the necessary functions both remotely and locally.


Our HPU is delivered as a one skid-mounted unit, and it contains the following main components:

• Oil reservoir with a capacity to be calculated depending on thenumber of actuators

• Electricmotorstobecontrolledfromseparatestarters• Hydraulicpump• ValvesandManifolds• Accumulatorandchargingkit• StarterControlPanelandControlPanel• SightGlass• LevelSwitches• PressureSwitchesforSTART/STOPofpumpsatpresetvalues• SafetyValves• PressureGauge• Oiltemperaturemonitoring

The HPU has been reviewed as an extremely reliable power unit. From standard to customised units, they are very well designed. Our standard units come with two motors, for back up purposes and to extend the lifespan of our HPU.

Allmotors,theelectricalcabinetsandallotherequipmentcomewithIP55 protection to ensure greater performance.


Reservoir Volume 150l 250l 350l

PumpCapacity/2Pumps 7l/min 14l/min 14l/min

Max Working Pressure 170 bar

ElectricMotor(2nos)

Voltage 440V/60Hz/3Ph/4pole

PowerConsumption 2.2kw/each 4kw/each 5.5kw/each

BladderAccumulator 20l 50l 2x32l

Our HPU is designed to be user-friendly. The layout for the electrical and hydraulic components is placed systematically and the open design allows for easy access during maintenance.

Features• Excellentdependability• Localandremotecontrol• Lowlevel,highpressure,hightemperaturealarms• AutomaticandmanualcontrolformotorSTART/STOP• Backup reservoir allowing for auto transfer between the two

reservoirs if needed• IP56protectiononmotorselectricalcabinetandequipment• Comesinthreestandardsizesof150,250and350litresreservoirs


HYDRAULIC SYSTEM ACCESSORIESDouble Pilot Block

TheDoublePilot(DP)BlockisdesignedtobeusedonbothourNRAandNHRseriesofdoubleactingactuators.It containsa throttlingvalvewhich isused foradjustingspeedwhen regulating thevalve’sopeningandclosingspeeds.

Features• ADoublePilot(DP)CheckValvewithhydro-lockfunctiontoprovideforlossofpressureinoilchambercausedby

external factors• ThrottlingValveforspeedadjustmenttominimisewaterhammeringeffect• Apressurereliefvalvesetat160barstopreventover-pressurisingtheactuatorsbyreleasingthehydraulicoilfrom

thechamberifthepressureinsidegoeshigherthan170to180bar• AhandpumpconnectionthatallowsemergencyoperationbymeansofaportableHandPump• Quickcouplingtoconnectthehandpumpforemergencyoperationofactuatorduringpowerfailure

OperationForusewithNordicDoubleActingActuators:• DPBlockconsistsofaHydraulicDPCheckValve,quickconnectionforemergencyhandpumpoperation,pressure

reliefvalvesattachmentandspeedadjustment• AbletobeusedonallNordicactuatormodels

For use with Submerged Actuators:• DPisMountedontheDPCO(DeckPlate)Blockatthedeckforeasymanualoverrideoperations• ASubmergedCapwillbeaddedontotheactuator’sindicator• SPCO(SubmergedPlate)Blockwillbeplacedontheactuator

THROTTLE VALVE

Deck Plate(DPCO)

DPCO is the deck plate used to mount the DP/SACblock in the dry area for the actuator in submerged conditions.

Submerged Applications Accessories

Submerge Plate (SPCO)

ByusingtheSPCO.WecancoverPortsAandBwiththeactuator in submergedconditions.TherewillbeaDP/SACBlockinthedryarea.

Submerged Cap

The pinion gear is covered by the submerged cap when the actuator is in submerged conditions to prevent water ingress.

DP Block


SAC Block

NordicFlowControl’sSACBlockisdesignedtobeusedonourNRAandNHRseriessingleactingactuators.TheSACconsists of a quick connection for emergency hand pump operation as well as a connection for throttle valves.

Athrottlingvalveisalsoincorporatedforadjustingspeed,whenregulatingthevalve’sopening/closingspeed.Thisfeature also greatly reduces the water-hammering effect.

Features• Throttlingvalvestoadjustthespeedofthehydraulicoilflow• Quickcouplingtoconnectthehandpumpduringemergencyconditionsorhydraulicpowerfailuretoopenor

close the valve

OperationForusewithNordicSingleActingActuators:• TheSACBlockconsistsofaquickconnectionforemergencyhandpumpoperationandspeedadjustment• Springactionbymeansofdiscsprings

For use with Submerged Actuators:• SACBlockismountedontheDPCO(DeckPlate)Blockatthedeckforeasymanualoverrideoperations• ASubmergedCapwillbeaddedontotheactuator’sindicator• SPCO(SubmergedPlate)Blockwillbeplacedontheactuator

SAC Block

DPCO Block


Manifold

Our manifolds work with a stacked design that comes in 6-station blocks. The design allows placements behind each manifold in a solenoid valve cabinet and very compact hydraulic systems can be built upon each station.

Besides theAandBuserports, there are two throttle/stop valvesoneachstation that regulates the flow and can be closed for repairs at the actuators.

The manifolds are provided with screws and recesses for cabinet mounting.

Features • Compactanduniquedesign• Throttlevalvesoneachstation• Systemsbleedvalveoneachmanifold• Handpumpsconnectionsforemergencyoperation


Working Pressure 135 bar

Maximum Test Pressure 200 bar

FittingConnection 1/4”BSPP

Weight of Nordic 6-Station 6 kg

Weight of Bottom Section 2 kg

Weight of Top Section 1 kg

Materials

Manifold,BottomandTopBlock Aluminium6061-T6

Throttle/StopValve Brass

Hand Pump Connection Steel

Seal Ring NBR


Top Block

In the top block, a system bleed valve and a pressure gauge (0to250barforP-linepressure)areincorporated.

When purging the pressure line P to the tank line T, the bleed valve is to be opened.

BottomBlock

In the bottom block, there are two hand pump connections on the P and T ports, which are incorporated for the emergency operation of the entire manifold.

Before using the hand pump connection, the two stop valves that are incorporated in the P and T ports should be closed.

Blank Plate The blank plate is used for blanking off connections that are not used on the manifold.

Acheck valve is used in themanifold (T-line) inorderto have flow moving in one direction, preventing back pressure.

The check valve is a standard feature in our manifold system.

CheckValve

Thethrottlevalveisusedforspeedadjustmentsandshut off.

Valve

Components


FEEDBACK UNITSMODULATING LIMIT SWITCH

NordicFlowControl’sModulatingLimitSwitch,formonitoringandmodulatingvalves,issuitableforuseinhazardousareas.ItsrobustandcompactdesignconformstoEN50014andEN50018,whichmakesitalsosuitableforZone1andZone2applications.

Features• Aluminiumcastingwithpowdercoatingbody• Boltsonvisualpositionindicatormakingitsecureandweatherproof• Quick-setcam• Dualcableentry• Captivecoverbolts• Easymountingbracket


Enclosure FlameproofEExdIIBT6andEExdIIC

T6 Weatherproof

Protection IP67/IP65

Coating Externalpowdercoated

Anodizedsurfaceagainstcorrosion

(Optional)

Area Zone1,2

GasClassification ExdIIB(C)T6

TemperatureRange -20°Cto85°C

(Highertemperatureavailable

uponrequest)

CableEntry 2xPT3⁄4”

2xPF3⁄4”

2xNPT3⁄4”

2 x M20 X 1.5 upon request

Maximum4

Terminal 8terminalstrips

(6forswitches,2forsolenoid

connection)

Position Monitoring Indicator 0°C to 90°C

Yellow - Open, Red - Close

Switches 2 x mechanical switches

Potentiometer Position transmitter 0 to 1 K

MountingBracket VDI/VDE3845NAMUR


ON/OFF LIMIT SWITCH

TheON/OFF Limit Switch is a rotary position indicator used tomonitor theOPEN/CLOSE position of the valve.The dome position indicator is constructed from high impact resistant polycarbonate material which offers instant recognition of valve position from up to 50 metres.

Features• VisualPositionIndicator• Quick-setcam• Multi-pointterminalstrip• Dualwirepotting• Captivecoverbolts• Easymountingbracket


Enclosure Weatherproof,IP67


TerminalStrip 8points

Position Indicator 0 to 90°C : Open – Yellow,

Closed - Red

Shaft 304stainlesssteel

MicroSwitches UsedinULCSAapproved

Inserts Bronze

O-Rings Nitrile(Rubber)

Cams Polycarbonate

Spring&CoverScrews 304stainlesssteel

Voltage Maximum250V,ACorDC

Current 0.6A125VorDC16A1⁄2HP125,

250AC16(3)A250V-T150

CableEntry 2x1⁄2”PF(PT)(NPT)

SwitchType 2SPDTMechanicalswitches

(Proximitysensors)

Painting Polyester powder coating with

black colour

Bracket Plastic/Platesteel


ON/OFF LIMIT SWITCH

The dome position indicator is constructed from high impact resistant polycarbonate material which offers instant recognition of valve position from up to 50 metres.

Features


Position Indicator 0 to 90°C : Open – Yellow,

Closed - Red

Shaft 304 stainless steel

Cams Polycarbonate

Spring & Cover Screws 304 stainless steel

Painting Polyester powder coating with

black colour

Nordic Flow Control Valve Remote Control Systems20 Nordic Flow Control Valve Remote Control Systems20


Maximum Working Pressure 135 bar


Rotation Indication Pointer

Viscosity 15 to 200 cSt

Weight 1.3kg

Materials

Screws Stainless steel

VALVE POSITION INDICATOR

When the actuator is submerged, the measurement of the actuator position by means of direct indication is not feasible. Nordic Flow Control’s Valve

applications, allowing accurate actuator measurement regardless of setup.

The basic intention of the VPI is to receive and measure position feedback from the actuator. The working principle behind is through the measurement of the

the actuator is rotated. The rotation of the gear wheel is also connected to a 3-wire potentiometer. The output signal from the potentiometer ranges from 0 to 1 K .

Features

VALVE POSITIONINDICATOR

SIDE VIEW TOP VIEW

SOLENDID VALUE

VPI

VPI WITH SOLENDID


Maximum Working Pressure 135 bar


Rotation Indication Pointer


HydraulicMedia Acidfreehydraulicoil


Maximumflowrate@135bar 15l/min

Weight 1.3kg

Filtrationrequirements 10μmabsoluteorfiner

ConnectionFace CETOPR35Hsize3

Materials

Housing Aluminium


VALVE POSITION INDICATOR

When the actuator is submerged, the measurement of the actuator position by means of direct indication is not feasible. Nordic Flow Control’s Valve PositionIndicator(VPI)canbeusedforbothnon-submergedandsubmergedapplications, allowing accurate actuator measurement regardless of setup.

The basic intention of the VPI is to receive and measure position feedback from the actuator. The working principle behind is through the measurement of the oildisplacementflow.Agearwheelconnectedtotheoilflowrotateswhenthe actuator is rotated. The rotation of the gear wheel is also connected to a 3-wire potentiometer. The output signal from the potentiometer ranges from 0 to 1 KΩ.

Features• Excellentdependability• Wellcraftedtosuitmostquarterturnvalves• EngineeredespeciallyforMarineandOffshoreapplications• Receivepositionfeedbackfromactuators• Rotationalgearwheelisconnectedtoa3-wirepotentiometer• Outputsignalfromthepotentiometerrangesfrom0to1KΩ

VALVE POSITIONINDICATOR

SIDE VIEW TOP VIEW

SOLENOID VALVE

VPI

VPI WITH SOLENOID


LOCAL INDICATOR

NordicFlowControlLocalIndicatorisusedtodisplaythepositionofthevalve(OPEN/CLOSE)locallyifthevalveisina submerged location. Once the incoming pressure exceeds the pressure setting on the pressure relief valve inside the local indicator, the oil would flow to a small chamber, causing the piston to move towards one side; as a result theindicatorwoulddeflectandgivestheOPEN/CLOSEstatusofthevalve.


Housing Aluminiumc/wtype3anodizing



Weight 0.7 kg

HydraulicMedia Acidfreehydraulicoil


FiltrationRequirements 25μmabsoluteorfiner

TemperatureRange -18ºCto80ºC

Local Indicator – Double Acting (Without Remote Signal)


Housing Aluminiumc/wtype3anodizing



Weight 0.7 kg

HydraulicMedia AcidfreehydraulicOil


FiltrationRequirements 25μmabsoluteorfiner

TemperatureRange -18ºCto80ºC

Local Indicator – Single Acting (Without Remote Signal)


HYDRAULIC HAND PUMPS

FixedThe fixed hydraulic hand pumps are usuallymountedin the series with the critical valves, e.g.: the shipside valve.

PortableThe portable hydraulic hand pumps are used for manual override at either the solenoid valve cabinet or the valve location.


Maximum System Working Pressure 135 bar

Maximum System Test Pressure 160 bar

Maximum Hand Pump Pressure 170 bar

SafetyValveSetting 180bar

WeightWith5LOil 20kg

OilDisplacementPerDoubleStoke 25cm3

Oil Viscosity Range 15 to 300 cSt


RecommendedTemperatureRange NAS1630/10orISOSolidContainmentCode18/15

StandardHose 3m(Otherhosesonrequest)


NORDIC HYDRAULIC FIXED HANDPUMP

3 WayBall Valve Port1/4” BSP

RemovableHandle


NORDIC HYDRAULIC PORTABLE HANDPUMP


PNEUMATIC VALVE REMOTE CONTROL SYSTEM

OVERVIEW

Nordic Flow Control understands that space is a premium on a vessel; with that in mind, our Pneumatic Valve RemoteControlSystemisperfect.WeareabletodoCentralisedandDecentralisedconfigurationsforoursystemtosuit your vessel, and we can provide for Submerged applications.

BENEFITS• Environmentallyfriendly• Costefficient• Reliable• Explosionandfiresafety• Simplicityofdesignandcontrol

FEATURES• Maintenanceisfussfree• DNVTypeApproval• Normalworkingtemperatureof-32°Cand90°C• Theactuatorsabletobeactuatedwithpneumaticpressureforupto8bar(optionalupto15bar)• Can be equipped with limit switches, solenoid valves, positioners, manual override wheels or unclutchable

gearboxes• Broadrangeofcouplingsavailabletoadapttheactuatorstoalmostanyvalve

NORDIC PNEUMATIC ACTUATORS

FEATURES• DNVTypeApproval• Normalworkingtemperatureof-32°Cand90°C• Constructedfromsiliconefreematerialsthatareresistanttooxidation• ActuatorbodyconformstoISO5211,DIN3337,VDE3845andNAMURstandards• ActuatorconstructionconformstoPEDDirective97-23-ECandATEXDirective94-9-EC



Scotch Yoke Design Actuator

No Description No Part No Description

1 Housing 14 Sleeve 27 Nut

2 Cover 15 Bushing 28 Stroke Bolt

3 Scotch Yoke 16 Washer 29 Nut

4 Trust Bearing 17 Plate 30 Pipe

5 Bushing 18 Gasket 31 Piston

6 Bolt 19 Sleeve 32 ExternalHousing

7 Cylinder 20 O-Ring 33 Internal Housing

8 Bolt 21 O-Ring 34 ExternalSpring

9 Stroke Bolt 22 Piston 35 Internal Spring

10 Gasket 23 O-Ring 36 Cap

11 Cover Nut 24 O-Ring


Pneumatic Actuators (Rack And Pinion Design)

No Description No Part No Description1 ActuatorBody 6 Spring Clip 11 Stroke Bolt Washer2 Pinion 7 Piston 12 Stroke Bolt Retaining Nut3 O-Ring(LowerPinion) 8 Piston Steel 13 EndCap4 O-Ring(TopPinion) 9 Stroke Bolt 14 EndCapSeals5 ThrustBearing(Pinion) 10 Stroke Bolt O-Ring 15 EndCapBolts

Double Acting Pneumatic Actuator

Single Acting Pneumatic Actuator

No Description No Part No Description1 Indicator 10 EndCap 19 Bearing(TopPinion)

2 Spring Cap 11 Piston Bearing 20 ThrustBearing(Pinion)

3 ThrustWasher(Pinion) 12 Piston Seal 21 Stroke Cam

4 ThrustBearing(Pinion) 13 PistonGuide 22 Pinion

5 ActuatorBody 14 Stroke Bolt 23 Bearing(LowerPinion)

6 Piston 15 Stroke Bolt Retaining Nut 24 O-Ring(LowerPinion)

7 Spring(Cartridge) 16 Stroke Bolt Washer 25 Plug

8 EndCapSeats 17 Stroke Bolt O-Ring

9 EndCapBolts 18 O-Ring(TopPinion)



PressureRanges 2to8bar

TemperatureRanges -20°Cto80°C

Operating Media Filtered dry or lubricated for non-corrosive gas

StrokeAdjustment 0°and90°withstandardadjustments±5°

Lubrication Allmovingpartsarefactorylubricatedforentirelifecycleofactuator

Connections BottomdrillingcomplieswithISO5211/DIN3337tomatchvalve.Interface

with solenoid valve, shaft top end and top drilling for assembling

accessoriesareinaccordancewithVDI/VDE-3845,NAMURstandard

Indicator PositionindicatorwithNAMURmounting

Pinion Hardenedallowsteelpinionisprecisiongroundandnickel-plated(over

25μm)inordertoreducefriction,providemaximumwearresistance.Full

conformancewiththeneweststandardsofISO5211andDIN3337.The

dimensions can be customised. Stainless steel and aluminium are also available.

ActuatorBody Aluminiumextrusionishardanodized(over30μm)toprotectagainst

wear and corrosion while reducing piston friction to the absolute

minimum.Otheroptionssuchasnickelplating,PTFEandpowderpolyester

painting are also available.

TravelAdjustment Standardadjustmentis±5°inboththeopenandclosepositionsthrough

easilyaccessibleexternaladjustmentbolts

HighPerformanceSprings Hightensilesteelspringsarecoatedwithzincphosphateforcorrosion

(forspringreturnonly) resistance and longer service. The pre-loaded spring can be safely and

rapidly disassembled.

BearingsandGuides Highlydurablecompoundmaterialprovideshightruststabilitywith

minimum friction and long life.

O-Rings NBR o-rings provide trouble free operation at standard temperature

ranges. Viton and silicone o-rings are available for high or low temperature

applications.


Decentralised System

Inadecentralisedsystem,Namurmountsolenoidvalvesaremountedonourpneumaticactuators.Thisconfiguration

does away with the solenoid valve cabinet, saving space.


NAMUR Mounted Solenoid Valves


Item 5, 3 Port 2 Position 5 Port 3 Position

Fluids Compressed air and inert gase 2

Pressure 1.5 to 10 bar 2.0 to 10 bar

EffSectionalArea(mm2)–5bar 19 11.5

AmbientandFluidTemperature 5°C to 6°C

ResponseTime(5bar) 25msorless 35msorless

MaximumWorkingFrequency 5c/sec 3c/sec

ManualOverride Pushbutton(Standard)/

Leverlock(Optional)

Coil Insulation Class F-Class or equivalent

PermissibleVoltageVariation ±10%ofratedvoltage

OffMinimumResidualVoltage AC:20%orless/DC:10%orless

PowerConsumption Holding–AC:5.5VA(60hz)/

DC:2.5W


ELECTRIC VALVE REMOTE CONTROL SYSTEM

OVERVIEW

NordicFlowControl’sElectricValveRemoteControlSystemsprovideacompact,all-in-onesolutionforyourelectrical

actuation needs.

BENEFITS• Combineshighlevelsoffunctionalitywithprecisepositioningandmultiplepoints

• Electronicsystemsareeasytoprogramforcomplexfunctions

• Easeofmaintenance

ElectricValveRemoteControlSystem

System Overview


COMPONENTS

Electrical Actuators

Features

• Compactconstructionwithahighoutputtorque

• Self-lockinggeartrainmaintainsthepositionofthevalvewhentheactuatorisde-energised

• Verygoodresistancetovibration

• Adjustablemechanicaltravellimitstopspreventovertravel

• Emergencyhandwheelandmechanicalpositionindicatorprovidedonallactuatorsasastandard

• FixingflangeaccordingtoISOstandard

• Removabledrivesocketforeasymachining

• Designedtofullyopenorcloseonanaverageof20to30timesaday

• ClassIIImodulatingactuatorsallowsforselectionbetweenintermediatepositions,foranaverageof360times

per day, with a precision better than 2%

• Waterproofenclosure

• Corrosionresistantdesign

• Explosionproofdesign

• Motorsareeasilyremovablewithfrontandreartotallyenclosedlubricatedballbearings

• MotorsratedtoS4service(intermittentdutywithstartingunderload)accordingtoIEC34-1


Transmission GearsThe gear drive system is composed of 2 reduction stages:The first stage: Aplanetarysystemdrivendirectlybyapiniononthemotordriveshaft.The second stage:Drivenbythesatellitewheelsoftheplanetarygearconsistingofawormandwheelgeartype.

Sincetheplanetarysystempermitsahighspeedreductionwithanexcellentefficiency,thesubsequentgear isdrivenatarelativelylowspeedwhichensuresabetteroverallefficiencythannormalstandardgeardesigns.Thegears are mechanically irreversible.

Emergency Hand WheelIn case of loss of power supply or a faulty control system, the presence of a hand wheel enables the operator to easily drive the valve to any required position manually.

Position IndicatorA visual position indicator allows for a clear indication of the current valve position. In fact, this indicator ismechanically linked to the valve shaft.

Travel Limit SwitchesAdjustmentoftravellimitswitchesissimplyaccomplishedwithastandardscrewdriver,nodisassemblyisrequired.This reduces downtime due to maintenance.

Asynchronous MotorsThe asynchronous motor technology offers the highest ratio of starting torque versus nominal torque. Thus, the actuator maximum torque capacity is available from the beginning of travel to unseat the valve.

Motor Thermal ProtectionAbuilt-inmotorthermalswitchprotectsthemotorfromexcessiveoverheatingconditions.

Torque SensorsThe output torque for valve operation is permanently measured by the lever deflection of the planetary gear external crown. This crown gear is maintained in position by two calibrated linear springs which can be set independently for each rotational direction to a desired torque value.

In the event the torque setting is reached, the crown lever compresses the spring to a point where a microswitch is tripped.

Asthisuniquesystemismechanicallyfriction-free,exceptionalprecisionandrepeatabilityareobtained,whichishighlyappreciatedwhenthedevicehasto“closeontorque”.

Detachable Drive BushThe output drive socket can be easily removed from the actuator, without the use of any special tool, for adaptation to the valve shaft.

Lifetime LubricationThe gear design permits lifelong lubrication by grease, thus reducing periodic maintenance requirements considerably.

Components

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General Specifications

Basic actuators include motor with thermal protection, gear case, emergency hand wheel, connection box, travel limit switches, torque switches and output drive with removable socket.


ELECTRO-HYDRAULIC UNIT (EHU)

TheNORDICElectro-HydraulicUnit (EHU) isan integratedelectro-hydraulicvalveremotecontrolsystemusedforcontrolling valves and actuators remotely, developed to be mounted directly on Nordic’s actuators on board vessels and offshore platforms.

TheEHUconsistsofahydraulicpumpdrivenbyanelectricmotor.Wheninoperation,theoilissiphonedfromthetankthroughthesuctionfiltertothepump,whichthengoesthroughthepilotoperatedcheckvalvetotheactuatorport, causing the actuator to open the valves.

When the valve is fully opened, the motor will be stopped by a limit switch. The actuator in this instance will be hydraulicallylockedinpositionbythepilotcheckvalve.EmergencyoperationcanbeconductedforbothdoubleandsingleactingEHUusingthemanualoverrideusingaportablehandpumpconnectingtothequickcouplingport.

ForsingleactingEHU,duringlossofpower,itcauseshydraulicpressuredropandnormallyclosed2/2-waysolenoidpoppet valve open contact. Compressed spring will be released and quickly closes the valve for safety purpose.

Alternatively,NORDICElectro-HydraulicactuatorscanbeoperatedlocallythroughaLocalControlBox.TheLocalControlBoxcontainstwopushbuttonsfor“OPEN”and“CLOSE”functions,andaLocal/Remotekeytochoosethemode of control, whether locally or remotely.

Inaddition,Electro-HydraulicactuatorscanbeinterfacedthroughPROFIBUS.

ABOUT PROFIBUS

ApplicationsPROFIBUS is able to seamlessly connect all types of devices without having to isolate process instruments from discrete devices with a second bus. In particular,PROFIBUSDPcanbeusedtoeasilyandreliablyintegrateMotorControl Centers (MCC), variable speed drives and switching gearwithcontrol systems.

PROFIBUS PA, which integrates seamlessly to DP, is used to networkandprovidepower tofield instruments. Bothmedia types support thePROFIsafeprofileforprocesssafety,whichallowstheuseofdistributedfail-safeI/O.

The system is applied to network control of electro-hydraulic operated valves for ballast, bilge and fuel & cargo oil handling valve remote control systems.PROFIBUSDPserialcommunicationisideallysuitedtothecontrolofNORDICEHU.ThePROFIBUSDPnetworkcanoperateoverarangeofcommunication speeds and provides the mechanism for control of the actuator and feedback of EHU. The latest NORDIC EHU PROFIBUS DPcardssupportstandardPROFIBUSDP.

Advantages• Suitableformarineapplications• Adaptableforapplicationslikeeasyplugandplay• Capableofremoteoperationwithoutanybusinterface(busoptional)• OverridepossibleontheElectro-HydraulicitselfthroughaLocalControlBoxormanuallythroughaportable hand pump • ThestandardGSDfilesallowallPROFIBUSDPmasterdevicestoeasilyconfigurethesystem• StandardizedI/OSystemreducesthenumberofsparesneeded• AnetworkusingPROFIBUSDPprovidesacosteffectivemethodforconnectingEHUinanylocationtothe centralcontrolsystemsimplyandefficiently



Limit Switch BoxQuick Coupling for Emergency Operation

Electro Hydraulic UnitCable Entry

Butterfly Valve

Nordic Single ActingHydraulic Actuator

Needle Valve

Terminal Enclosure

2/2-way SolenoidPoppet Valve

Circuit Diagram

1b

2

4

5

6

7

Limit Switch BoxQuick Coupling for Emergency Operation

Electro Hydraulic UnitCable Entry

Butterfly Valve

Nordic Double Acting Hydraulic Actuator

TerminalEnclosure

1a

2

3

4

5

6

7

8

Circuit Diagram

Nordic Flow Control Valve Remote Control System 99

Working Pressure

Ambient/Working Temperature

Rotation

Closing

Indication

Enclosure Rating

Viscosity Range

Solenoid Valve

Emergency Operation

Motor Voltage

Nominal Power

Maximum Starting Current

Overload Protection

Delivery Rate of Radial Piston Pump

Maximum Operating Pressure

Pump Relief Valve Preset to

Duty Cycle

135 Bar

-15oC to 40oC

90o +/- 3o

Clockwise

On/Off on Drive Unit

IP 65

200 to 10 mm2/s

2/2-way, normally open poppet valve cartridge, 230V AC coil

Emergency operations in the case of a loss of power is carried out with a portable hand pump

Single phase AC, 230V AC 50/60Hz

300W

< 6A at 220V 50 Hz (varies with size of EHU)

Temperature switch opens at 140oC

0.2 ~ 0.5 l/min (varies with size of EHU)

200 Bar

145 Bar

S3 10% ED

No.

1a /1b

2

3

4

5

6

7

8

Item

Single Acting Actuator/Double Acting Actuator

Quick Coupling for Emergency Operation

Solenoid Valve (normally open)

Double Pilot Operated Check Valve

Electric Motor

Hydraulic Pump

Relief Valve

Throttle Valve for Single Acting Actuator Only (for emergency operation)

Double Acting EHU

Single Acting EHU

135 Bar

-15oC to 40oC

90o +/- 3o

Clockwise

On/Off or Modulating on Drive Unit

IP 65

200 to 10 mm2/s

-

Emergency operations in the case of a loss of power is carried out with a portable hand pump

Single phase AC, 230V AC 50/60Hz

300W

< 6A at 220V 50Hz (varies with size of EHU)

Temperature switch opens at 140oC

0.2 ~ 0.5 l/min (varies with size of EHU)

200 Bar

145 Bar

S3 10% ED

Single Acting EHU Double Acting EHU

HYDRAULIC VALVE REMOTE CONTROL SYSTEM · The system consists of the hydraulic actuator, a power...

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Transcript of HYDRAULIC VALVE REMOTE CONTROL SYSTEM · The system consists of the hydraulic actuator, a power...